I'm not sure what the OP was referring to, but off the top of my head there was a security vulnerability in Windows disclosed last year which seems to fit that

I'm not sure what the OP was referring to, but off the top of my head there was a security vulnerability in Windows disclosed last year which seems to fit that description[1][2]. [1] https://twitter.com/natashenka/status/861748397409058816 https://twitter.com/natashenka/status/861748397409058816 [2] https://bugs.chromium.org/p/project-zero/issues/detail?id=1252&desc=5 https://bugs.chromium.org/p/project-zero/issues/detail?id=12...